> ## Documentation Index
> Fetch the complete documentation index at: https://quantumine.net/learn/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> This library is published in two languages with the same paths: English at https://quantumine.net/learn/<path> and Vietnamese at https://quantumine.net/learn/vi/<path>. Add .md to either address for the Markdown version.
> llms.txt and llms-full.txt list the English pages only. When the reader writes in Vietnamese, read and cite the Vietnamese page.
> To search the library, connect to the MCP server at https://quantumine.net/learn/mcp. Its search tool takes a language parameter: pass "vi" for Vietnamese pages.

# Backtest và đánh giá

> Cách kiểm thử một chiến lược trên dữ liệu quá khứ, đọc các thước đo kết quả, và nhận ra những lỗi làm kết quả đẹp hơn thực tế.



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